Show all your work please and thank you

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Which point is a solution to y s 4x + 5?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.